JP3839341B2

JP3839341B2 - Lighting device

Info

Publication number: JP3839341B2
Application number: JP2002108660A
Authority: JP
Inventors: 幸晴長野
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-11
Filing date: 2002-04-11
Publication date: 2006-11-01
Anticipated expiration: 2022-04-11
Also published as: JP2003303507A

Description

【０００１】
【発明の属する技術分野】
本発明は、丸形の蛍光ランプの照度を上げるようにした照明装置に関し、特に反射部材を設けたものに関する。
【０００２】
【従来の技術】
従来の照明装置としては、トラフ形笠や逆富士形笠の内面を白色面にしていて、蛍光ランプから上方あるいは斜め上方に放射される光を下方に反射させるようにして、照度を上げるようにしたものが一般的である。また、その照度をさらに上げるように笠の内面を鏡面にしたものもある。
【０００３】
【発明が解決しようとする課題】
しかしながら、このような従来の照明装置では、その照度を上げるべく、笠の内面を白色面にした一般的なものから鏡面にした新たなものに交換すると、コストが嵩むという問題点があった。また、交換すべき笠と照明装置本体との取付性が良くなかったりして、交換作業が煩わしいという問題点もある。
【０００４】
本発明は、このような従来の問題点に着目してなされたもので、既存の一般的な照明装置に反射部材を取り付けるだけで、照度を上げるようにし、コストを低減することができると共に、反射部材の取付作業が容易な照明装置を提供することを目的としている。
【０００５】
【課題を解決するための手段】
かかる目的を達成するための本発明の要旨とするところは、次の項の発明に存する。
［１］丸形の蛍光ランプ（２０）の照度を上げるようにした照明装置であって、
前記丸形の蛍光ランプ（２０）に沿うように環形状に形成され、前記丸形の蛍光ランプ（２０）の内径側の部分（２２）から外径側の部分（２４）に至る半円周面（２５）の上側に係止して、該上側の半円周面（２５）を全体的にあるいは部分的に外部から覆うことで、前記蛍光ランプ（２０）から上方あるいは斜め上方に放射される光を下方へ反射させる反射部材（３０）を備え、
前記蛍光ランプ（２０）は、その丸形の円周を２または３等分する位置で照明装置の支持部材（１３、１４）により支持されており、
前記反射部材（３０）は、６角形状または１２角形状に形成されており、
前記反射部材（３０）の角部（３４）は、前記照明装置の支持部材（１３、１４）に対応するように配されている
ことを特徴とする照明装置。
【００１７】
次に、前記項に記載された発明の作用について説明する。
反射部材（３０）は丸形の蛍光ランプ（２０）に沿うように環形状に形成されている。その反射部材（３０）は、蛍光ランプ（２０）の内径側の部分（２２）から外径側の部分（２４）に至る半円周面（２５）の上側に係止して、該上側の半円周面（２５）を全体的にあるいは部分的に外部から覆っている。それにより、反射部材（３０）の取付作業が容易になるとともに、特別な取付部材が不要になり、さらにコストを低減できる。
【００１８】
蛍光ランプ（２０）から上方あるいは斜め上方に放射される光は、反射部材（３０）で下方へ反射させる。それにより、蛍光ランプ（２０）の上方灯に放射される光を逃がすことなく、下方へ向けることができ、蛍光ランプ（２０）の照度を上げることができる。
【００２５】
さらに、反射部材（３０）は多角形状に形成されている。多角形状の数は多すぎたり少なすぎたりすると蛍光ランプ（２０）の照度を十分に上げることができない。具体的には、反射部材（３０）は６角形状または１２角形状に形成されている。
【００２６】
このとき、反射部材（３０）の角部（３４）は照明装置の支持部材（１３、１４）に対応するように配される。それにより、蛍光ランプ（２０）と反射部材（３０）の角部（３４）との間に形成された隙間に、照明装置の支持部材（１３、１４）が通るようになり、支持部材（１３、１４）を外すことなく、反射部材（３０）を取り付けることができ、取付作業が容易になる。
【００３１】
【発明の実施の形態】
以下、図面に基づき本発明の一実施の形態を説明する。
各図は本発明の一実施の形態を示している。
図１は発明の一実施の形態に係る照明装置の正面図、図２は同じく照明装置の蛍光ランプおよび反射部材を下方から見た底面図、図３は図２のＩＩＩ−ＩＩＩ線断面図、図４は反射部材を斜め下方から見た斜視図である。
【００３２】
図１〜図４に示すように、本発明の一実施の形態に係る照明装置は、丸形の蛍光ランプ２０の照度を上げるようにしたものである。照明装置の略円筒形の本体１１は天井等につり下げられ、本体１１の周壁には支持環１２が固設され、支持環１２からフックである支持部材１３、１４が延設されている。本体１１〜支持部材１４および後述する蛍光ランプ２０の全てを上方から覆うように笠１５が設けられている。
【００３３】
各支持部材１３、１４は２種類設けられ、３２Ｗの蛍光ランプ２０および４０Ｗの蛍光ランプ２０をそれぞれ支持している。各蛍光ランプ２０はその丸形の円周を３等分する位置で照明装置の支持部材１３、１４によりそれぞれ支持されている。
【００３４】
丸形の蛍光ランプ２０に沿うように環形状に形成された反射部材３０が備えられている。本実施の形態では反射部材３０が４０Ｗの蛍光ランプ２０に沿うように設けられている。反射部材３０は、丸形の蛍光ランプ２０の内径側の部分２２から外径側の部分２４に至る半円周面２５の上側を全体的にあるいは部分的に外部から覆うことで、蛍光ランプ２０から上方あるいは斜め上方に放射される光を下方へ反射させるものである。
【００３５】
反射部材３０は、蛍光ランプ２０の半円周面２５の上側に係止することで、照明装置に取り付けられている。すなわち、反射部材３０は、蛍光ランプ２０に対し下方から外嵌すべく蛍光ランプ２０の外径より大径の第１状態から上側の半円周面２５に係止すべく蛍光ランプ２０の外径より小径の第２状態へ縮径可能に構成されている。
【００３６】
図５は反射部材を斜め上方から見た部分斜視図、図６は反射部材の平面図、図７は反射部材の底面図、図８は反射部材の正面図である。図１および図５〜図６に示すように、反射部材３０は、環形状の一部に開口３２を有する略Ｃ字形状に形成され、その開口２２を閉じることで、第１状態（大径の状態）から第２状態（小径の状態）へ縮径可能なように構成されている。また、反射部材３０は、第１状態から第２状態に復元する復元力を有している。
【００３７】
反射部材３０は多角形状に形成されている。本実施の形態では、反射部材３０は１２角形状に形成されている。反射部材３０の角部３４は、照明装置の支持部材１３、１４に対応するように配され、蛍光ランプ２０と角部３４との間の隙間に支持部材１３、１４が通るようになっている。反射部材３０は６の倍数の多角形状に形成されていればよく、６角形状あるいは１８角形状以上であってもよい。
【００３８】
図３に示すように、環形状の反射部材３０は、その反射部材３０の径方向で破断した断面が外部から閉じられた閉空間を形成していて、閉空間は４つの面で閉じられて成る。４つの面は、蛍光ランプ２０に対向する第１反射部３６および第２反射部３７と、取付状態で垂直面となる外周面３８および、取付状態で水平面となる上面部３９である。
【００３９】
第１反射部３６は、環形状の反射部材３０の径方向に対して所定の第１角度θ１で傾斜していて、蛍光ランプ２０の上側の半円周面２５に係止している。第２反射部３７は、第１反射部３６に連続し、環形状の反射部材３０の径方向に対して所定角度より大きな第２角度θ２で傾斜していて、蛍光ランプ２０の上側の半円周面２５に隙間をもって対向している。
【００４０】
図９は反射部材３０の展開した状態を示す正面図である。図９で示す一点鎖線は、反射部材３０の曲げ線である。前記展開した状態の反射部材３０ａは薄板を複数の曲げ工程を経て成形される。前記展開した状態の反射部材３０ａにおいて、第１反射部３６および第２反射部３７とすべき面は１層以上の薄膜が施されていて鏡面になっている。
【００４１】
前記展開した状態の反射部材３０ａにおいて、隣接する外周面３８に相当する板同士はつながっている。一方、隣接する第１反射部３６に相当する板同士の間に略Ｖ字形の切り込み部３６ａが入れられ、隣接する第２反射部３７に相当する板同士の間に直線的な切り込み部３７ａが入れられている。また、隣接する上面部３９に相当する板同士の間に直線的な切り込み部３９ａが入れられている。さらに、反射部材３０ａの一端部に位置する外周面３８には延長部３８ａが形成されている。
【００４２】
薄板の折曲げ工程において、略Ｖ字形の切り込み部３６ａを設けることによって、隣接する第１反射部３６同士は肉余りが生じることなく重り合うことはない。一方、直線的な切り込み部３９ａを設けることによって、隣接する上面部３９同士は肉余りが生じて重なり合う。第１反射部３６の端部に連続して形成された折り返し部３６ｂを前記各上面部３９の端部３９ｂに重ね、各上面部３９の端部３９ｂが浮き上がらないように抑えることで、外観品質を高めるとともに、折り返し部３６ｂによって第１反射部３６の端部および上面部３９の端部３９ｂの各々の切り縁を外部から覆うことで、安全性を高めることができる。
【００４３】
次に、本実施の形態の作用について説明する。
反射部材３０は丸形の蛍光ランプ２０に沿うように環形状に形成されている。その反射部材３０は、蛍光ランプ２０の内径側の部分２２から外径側の部分２４に至る半円周面２５の上側を全体的にあるいは部分的に外部から覆っている。このとき、反射部材３０は蛍光ランプ２０の半円周面２５に近接しあるいは接している。
【００４４】
蛍光ランプ２０から上方あるいは斜め上方に放射される光は、反射部材３０で下方へ反射させる。それにより、蛍光ランプ２０の上方等に放射される光を逃がすことなく、下方へ向けることができ、蛍光ランプ２０の照度を上げることができる。具体的には、蛍光ランプ２０の上方等に放射される光は反射部材３０の第１反射部３６および第２反射部３７に入射することで下方へ反射するようになる。
【００４５】
反射部材３０は丸形の蛍光ランプ２０に沿うように配されるものであるが、蛍光ランプ２０の半円周面２５の上側に係止することで支持される。反射部材３０を蛍光ランプ２０の半円周面２５に直接係止することにより、反射部材３０の取付作業が容易になるとともに、特別な支持部材が不要になり、さらにコストを低減できる。
【００４６】
この反射部材３０は蛍光ランプ２０を取り外すことなく装置本体に取り付けることができる。すなわち、蛍光ランプ２０の外径より大径の第１状態の反射部材３０を蛍光ランプ２０に対し下方から外嵌するように蛍光ランプ２０の外側に通すことで、蛍光ランプ２０の上方に移動する。
【００４７】
次に、第１状態の反射部材３０を第２状態に縮径する。それにより、反射部材３０の半円周面２５の上側を全体的にあるいは部分的に外部から反射部材３０で覆うことができる。この反射部材３０は第２状態になることで、蛍光ランプ２０の半円周面２５の上側に係止可能になり、反射部材３０の特別な取付部材が不要になる。
【００４８】
このように、反射部材３０は縮径可能であるが、具体的には、反射部材３０の環形状の一部に開口２２を有する略Ｃ字形状に形成されている。そして、その開口２２を閉じることで、反射部材３０を第１状態から第２状態へ縮径可能になる。
【００４９】
また、反射部材３０は第１状態から第２状態に復元する復元力を有している。反射部材３０を復元力に抗して第２状態から第１状態に変形しておき、反射部材３０を蛍光ランプ２０の外側を通過させて蛍光ランプ２０の上方に移動した後に、反射部材３０をその復元力で第２状態に復元するようにすれば、反射部材３０が蛍光ランプ２０の上側の半円周面２５に係止する状態になるので、反射部材３０の取付作業が極めて容易になる。第１状態では反射部材３０の一端側の外周面３８の延長部３８ａとその他端側の外周面３８との両者が相互にずれる一方、第２状態では両者が相互に重なるようになっている。
【００５０】
さらに、反射部材３０は多角形状に形成されている。本実施の形態では、反射部材３０は１２角形状に形成されている。反射部材３０の多角形状の数は、６、１２、１８、２４…というように６の倍数で順に多くすることができるが、その多角形状の数を多くしていって円形状に近づくほど蛍光ランプ２０の照度を十分に上げることができないという結果を得ている。反対に、反射部材３０の多角形状の数は、６より少ないと、蛍光ランプ２０に反射部材３０を取り付ける際に、支持部材１３、１４に干渉したりして、取付作業性がよくない。
【００５１】
すなわち、反射部材３０を１２角形状にすることで、反射部材３０の角部２４を照明装置の支持部材１３、１４に対応するように配することができる。それにより、蛍光ランプ２０と反射部材３０の角部２４との間に形成された隙間に、照明装置の支持部材１３、１４が通るようになり、支持部材１３、１４を外すことなく、反射部材３０を取り付けることができ、取付作業性が容易になる。
【００５２】
反射部材３０は平面的に見ると環形状（実施の形態では１２角形状）であるが、環形状の反射部材３０の径方向で破断すると、第１反射部３６〜上面部３９の４面により閉じられた閉空間が形状されている。このように、反射部材３０を閉断面形状にすることで、反射部材３０の強度を高めることができるとともに、重量が嵩まないで、軽量化を図ることができる。
【００５３】
反射部材３０の第１反射部３６は蛍光ランプ２０の半円周面２５の上側に係止していて、反射部材３０の径方向に対して第１角度θ１で傾斜していて、蛍光ランプ２０から主に上方に放射される光を略下方に反射する。また、反射部材３０の第２反射部３７は、上側の半円周面２５に隙間をもって対向していて、反射部材３０の径方向に対して第２角度θ２で傾斜していて、蛍光ランプ２０から斜め上方に放射される光を略下方に反射するようになっている。
【００５４】
なお、前記実施の形態においては、４０Ｗの蛍光ランプ２０に対し下方から外嵌すべく蛍光ランプ２０の外径より大径の第１状態から上側の半円周面２５に係止すべく蛍光ランプ２０の外径より小径の第２状態へ縮径可能に構成されたものを示したが、これに限らない。すなわち、４０Ｗの蛍光ランプ２０に対し下方から内嵌すべく蛍光ランプ２０の内径より小径の第３状態から上側の半円周面２５に係止すべく蛍光ランプ２０の内径より大径の第４状態へ拡径可能に構成されていてもよい。
【００５５】
この場合、反射部材３０は、例えば、環形状の一部に部材同士の重なる重畳部が形成され、その部材同士の重なり代を減少させることで、第３状態から第４状態へ拡径可能なように構成される。反射部材３０は、その復元力によって、第３状態から第４状態へ変形可能に構成されている。このように、反射部材３０を蛍光ランプ２０の内径側に通すときには、蛍光ランプ２０のコネクタ２６を避けるように反射部材３０を形成すればよい。
【００５６】
同じように、反射部材３０を３２Ｗの蛍光ランプ２０に沿うように設けても良い。その際、反射部材３０の取付は、その蛍光ランプ２０に外嵌するように蛍光ランプ２０の外側に通してもよく、蛍光ランプ２０に内嵌するように蛍光ランプ２０の内側に通すようにしてもよい。
【００５７】
反射部材３０は第１状態あるいは第３状態に復元する復元力を有していてもよい。この場合、反射部材３０を蛍光ランプ２０の外径側あるいは内径側に通すには、反射部材３０をその復元力に抗して第２状態あるいは第４状態に変形させる必要がある。
【００５８】
また、各蛍光ランプ２０がその丸形の円周を２等分する位置で照明装置の支持部材１３、１４によりそれぞれ支持される場合にも、反射部材３０が６角形状または１２角形状に形成されているので、反射部材３０の角部３４が、照明装置の支持部材１３、１４に対応して配されるようになり、蛍光ランプ２０と角部３４との間の隙間を支持部材１３、１４が通るようになり、蛍光ランプ２０を支持部材１３、１４から外さずに、反射部材３０を取り付けることができる。
【００５９】
さらに、第１反射部３６および第２反射部３７とすべき側の面を鏡面とした薄板を複数の曲げ工程によって反射部材３０を成形するものを示したが、樹脂材を射出成形した後に、第１反射部３６および第２反射部３７とすべき側の面に蒸着により薄膜を形成するようにしたものであってもよい。
【００６０】
さらに、反射部材３０を蛍光ランプ２０に直接的に係止するものを示したが、蛍光ランプ２０に近接させて配するようにしても良い。この場合、蛍光ランプ２０は照明装置の本体１１や笠１５に支持されることになる。
さらに、反射部材３０を蛍光ランプ２０の下方からその上方へ通した後に、蛍光ランプ２０の上側の半円周面２５に係止して取り付けるものを示したが、例えば、照明装置の本体１１から蛍光ランプ２０を外し、その蛍光ランプ２０の上側の半円周面２５に反射部材３０を取り付けた後に、反射部材３０を蛍光ランプ２０とともに本体１１に取り付けるようにしてもよい。
【００６１】
さらに、図１０〜図１４は本発明の他の一実施の形態に係る照明装置を示している。図１０は、本発明の他の一実施の形態に係るランプおよび反射部材を正面から見た斜視図、図１１は反射部材を斜め上方から見た斜視図、図１２は反射部材を斜め下方から見た斜視図、図１３は図１１のＸＩＩＩ−ＸＩＩＩ線断面図である。
【００６２】
図１０〜図１３に示すように、反射部材５０は、略球形のバルブ４１を有するランプ４０の照度を上げるためのものであってもよい。すなわち、反射部材５０は、略球形のバルブ４１をその使用する状態で上半球４２と下半球４３とに仕切る大円４４の円周方向に沿うように環形状に形成されている。この反射部材５０は、上半球４２の球面を全体的にあるいは部分的に外部から覆うことで、ランプ４０から上方あるいは斜め上方に放射される光を下方へ反射させるようになっている。
【００６３】
図１３に示すように、環形状の反射部材５０は、その反射部材５０の径方向で破断した断面が外部から閉じられた閉空間を形成していて、その閉空間は上下方向でほぼ対称形であって、５つの面で閉じられて成る。５つの面は、蛍光ランプ２０に対向する第１反射部５６の一対、第２反射部５７の一対および、取付状態で垂直面となる外周面５８である。
【００６４】
図１４は反射部材５０の展開した状態を示す正面図である。図１４で示す一点鎖線は、反射部材５０の曲げ線である。前記展開した状態の反射部材５０ａは薄板を複数の曲げ工程を経て成形される。前記展開した状態の反射部材５０ａにおいて、第１反射部５６および第２反射部５７とすべき面は１層以上の薄膜が施されていて鏡面になっている。
【００６５】
前記展開した状態の反射部材５０ａにおいて、隣接する外周面５８に相当する板同士はつながっている。一方、隣接する第１反射部５６および第２反射部５７に相当する板同士の間に略Ｖ字形の切り込み部５６ａが入れられている。また、反射部材５０ａの一端部に位置する外周面５８には延長部５８ａが形成されている。
【００６６】
一対の第１反射部５６の一方の端部に連続して形成された折り返し部５６ｂを前記一対の第１反射部５６の他方の端部に重ね、他方の第１反射部５６の端部の各々が浮き上がらないように抑えることで、外観品質を高めるとともに、折り返し部５６ｂによって第１反射部５６の端部の切り縁を外部から覆うことで、安全性を高めることができる。
【００６７】
反射部材５０を照明装置の本体に取り付けるには、先ず、ランプ４０を照明装置の本体から外しておき、反射部材５０をランプ４０に外嵌させるようにそのランプ４０のコネクタ側から通し、反射部材５０をランプ４０の上半球４２の球面に係止させた後に、ランプ４０を照明装置の本体に取り付けるようにする。一方、前記蛍光ランプ２０の反射部材３０と同じように、反射部材５０は、ランプ４０の下半球４３からランプ４０の外側を通って、その上半球４２側に移動するようにしてもよい。
【００６８】
【発明の効果】
本発明に係る照明装置によれば、丸形の蛍光ランプに沿うように環形状に形成され、丸形の蛍光ランプの内径側の部分から外径側の部分に至る半円周面の上側に係止して、該上側の半円周面を全体的にあるいは部分的に外部から覆うことで、蛍光ランプから上方あるいは斜め上方に放射される光を下方へ反射させる反射部材を備えたので、既存の一般的な照明装置に反射部材を取り付けるだけで、照度を上げることができ、コストを低減することができる。
【００６９】
また、蛍光ランプの半円周面の上側に係止することで反射部材が支持されるようにしたので、反射部材の取付作業が容易になるとともに、特別な支持部材が不要になり、さらにコストを低減することができる。
さらに、蛍光ランプと反射部材の角部との間に形成された隙間に、照明装置の支持部材が通るようになり、支持部材を外すことなく、反射部材を取り付けることができ、取付作業が容易になる。
【図面の簡単な説明】
【図１】本発明の一実施の形態に係る照明装置の正面図である。
【図２】本発明の一実施の形態に係る蛍光ランプおよび反射部材を下方から見た底面図である。
【図３】図２のＩＩＩ−ＩＩＩ線断面図である。
【図４】本発明の一実施の形態に係る反射部材を斜め下方から見た斜視図である。
【図５】本発明の一実施の形態に係る反射部材を斜め上方から見た部分斜視図である。
【図６】本発明の一実施の形態に係る反射部材の平面図である。
【図７】本発明の一実施の形態に係る反射部材の底面図である。
【図８】本発明の一実施の形態に係る反射部材の正面図である。
【図９】本発明の一実施の形態に係る反射部材の展開した状態を示す正面図である。
【図１０】本発明の他の一実施の形態に係るランプおよび反射部材を正面から見た斜視図である。
【図１１】本発明の他の一実施の形態に係る反射部材を斜め上方から見た斜視図である。
【図１２】本発明の他の一実施の形態に係る反射部材を斜め下方から見た斜視図である。
【図１３】図１１のＸＩＩＩ−ＸＩＩＩ線断面図である。
【図１４】本発明の他の一実施の形態に係る反射部材の展開した状態を示す正面図である。
【符号の説明】
θ１…第１角度
θ２…第２角度
１１…本体
１２…支持環
１３、１４…支持部材
１５…笠
２０…蛍光ランプ
２２…内径側の部分
２４…外径側の部分
２５…半円周面
２６…コネクタ
３０…反射部材
３０ａ…展開した状態の反射部材
３２…開口
３４…角部
３６…第１反射部
３６ａ…切り込み部
３６ｂ…折り返し部
３７…第２反射部
３７ａ…切り込み部
３８…外周面
３８ａ…延長部
３９…上面部
３９ａ…切り込み部
４０…ランプ
４１…バルブ
４２…上半球
４３…下半球
４４…大円
５０…反射部材
５６…第１反射部
５７…第２反射部
５８…外周面[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lighting device that increases the illuminance of a round fluorescent lamp, and particularly relates to a lighting device provided with a reflecting member.
[0002]
[Prior art]
As a conventional lighting device, the inner surface of the trough-shaped shade or reverse Fuji-shaped shade is white, and the light emitted upward or obliquely upward from the fluorescent lamp is reflected downward to increase the illuminance. It is common. In addition, there is a mirror with the inner surface of the shade to further increase the illuminance.
[0003]
[Problems to be solved by the invention]
However, in such a conventional lighting device, there is a problem that the cost increases when the general inner surface of the shade is replaced with a new one having a mirror surface in order to increase the illuminance. In addition, there is a problem that the replacement work is troublesome because the mountability between the shade to be replaced and the lighting device main body is not good.
[0004]
The present invention has been made paying attention to such conventional problems, and by simply attaching a reflective member to an existing general lighting device, the illuminance can be increased, and the cost can be reduced . It aims at providing the illuminating device with which the attachment operation | work of a reflecting member is easy.
[0005]
[Means for Solving the Problems]
The gist of the present invention for achieving the object lies in the invention of the next section.
[1] An illumination device that increases the illuminance of a round fluorescent lamp (20),
A semicircular shape that is formed in a ring shape along the round fluorescent lamp (20) and extends from the inner diameter side portion (22) to the outer diameter side portion (24) of the round fluorescent lamp (20). By engaging with the upper side of the surface (25) and covering the upper semicircular surface (25) entirely or partially from the outside, the fluorescent lamp (20) is radiated upward or obliquely upward. a reflecting member (30) to reflect that light downwardly,
The fluorescent lamp (20) is supported by a support member (13, 14) of the lighting device at a position that divides the circular circumference into two or three equal parts,
The reflective member (30) is formed in a hexagonal shape or a dodecagonal shape,
The corner | angular part (34) of the said reflection member (30) is distribute | arranged so that it may correspond to the supporting member (13,14) of the said illuminating device.
[0017]
Next, the operation of the invention described in the above section will be described.
The reflecting member (30) is formed in a ring shape so as to follow the round fluorescent lamp (20). The reflecting member (30) is engaged with the upper side of the semicircular surface (25) from the inner diameter side portion (22) to the outer diameter side portion (24) of the fluorescent lamp (20) , The semicircular circumferential surface (25) is entirely or partially covered from the outside. Thereby, the attachment work of the reflecting member (30) is facilitated, a special attachment member is not required, and the cost can be further reduced.
[0018]
The light emitted upward or obliquely upward from the fluorescent lamp (20) is reflected downward by the reflecting member (30). Thereby, the light emitted to the upper lamp of the fluorescent lamp (20) can be directed downward without escaping, and the illuminance of the fluorescent lamp (20) can be increased.
[0025]
Furthermore, the reflecting member (30) is formed in a polygonal shape. If the number of polygonal shapes is too large or too small, the illuminance of the fluorescent lamp (20) cannot be sufficiently increased. Specifically, the reflecting member (30) is formed in a hexagonal shape or a dodecagonal shape.
[0026]
At this time, the corners (34) of the reflecting member (30) are arranged so as to correspond to the support members (13, 14) of the lighting device. As a result, the support members (13, 14) of the lighting device pass through the gap formed between the fluorescent lamp (20) and the corner (34) of the reflection member (30), and the support member (13 , 14) can be attached without removing, and the attaching operation is facilitated.
[0031]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
Each figure shows an embodiment of the present invention.
1 is a front view of a lighting device according to an embodiment of the invention, FIG. 2 is a bottom view of the fluorescent lamp and the reflecting member of the lighting device viewed from below, and FIG. 3 is a cross-sectional view taken along line III-III in FIG. FIG. 4 is a perspective view of the reflecting member as viewed obliquely from below.
[0032]
As shown in FIGS. 1-4, the illuminating device which concerns on one embodiment of this invention raises the illumination intensity of the round fluorescent lamp 20. As shown in FIG. The substantially cylindrical main body 11 of the lighting device is suspended from a ceiling or the like. A support ring 12 is fixed to the peripheral wall of the main body 11, and support members 13 and 14 that are hooks are extended from the support ring 12. A shade 15 is provided so as to cover all of the main body 11 to the support member 14 and a fluorescent lamp 20 described later from above.
[0033]
Each of the support members 13 and 14 is provided in two types, and supports the 32 W fluorescent lamp 20 and the 40 W fluorescent lamp 20, respectively. Each fluorescent lamp 20 is supported by support members 13 and 14 of the lighting device at positions that divide the circular circumference into three equal parts.
[0034]
A reflecting member 30 formed in an annular shape so as to follow the round fluorescent lamp 20 is provided. In the present embodiment, the reflecting member 30 is provided along the 40 W fluorescent lamp 20. The reflecting member 30 covers the upper side of the semicircular surface 25 from the inner diameter side portion 22 to the outer diameter side portion 24 of the round fluorescent lamp 20 entirely or partially from the outside, so that the fluorescent lamp 20 The light radiated upward or obliquely upward is reflected downward.
[0035]
The reflecting member 30 is attached to the lighting device by being locked on the upper side of the semicircular surface 25 of the fluorescent lamp 20. That is, the reflecting member 30 has an outer diameter of the fluorescent lamp 20 to be engaged with the upper semicircular surface 25 from the first state larger than the outer diameter of the fluorescent lamp 20 so as to be fitted onto the fluorescent lamp 20 from below. The diameter can be reduced to the second state having a smaller diameter.
[0036]
5 is a partial perspective view of the reflecting member as viewed obliquely from above, FIG. 6 is a plan view of the reflecting member, FIG. 7 is a bottom view of the reflecting member, and FIG. 8 is a front view of the reflecting member. As shown in FIGS. 1 and 5 to 6, the reflecting member 30 is formed in a substantially C shape having an opening 32 in a part of the ring shape, and the first state (large diameter) is formed by closing the opening 22. The state can be reduced from the second state to the second state (small diameter state). Further, the reflecting member 30 has a restoring force for restoring from the first state to the second state.
[0037]
The reflecting member 30 is formed in a polygonal shape. In the present embodiment, the reflecting member 30 is formed in a dodecagon shape. The corners 34 of the reflecting member 30 are arranged so as to correspond to the support members 13 and 14 of the lighting device, and the support members 13 and 14 pass through the gap between the fluorescent lamp 20 and the corners 34. . The reflecting member 30 may be formed in a polygonal shape that is a multiple of 6, and may be a hexagonal shape or an 18-sided shape or more.
[0038]
As shown in FIG. 3, the annular reflecting member 30 forms a closed space in which a cross section broken in the radial direction of the reflecting member 30 is closed from the outside, and the closed space is closed by four surfaces. Become. The four surfaces are a first reflecting portion 36 and a second reflecting portion 37 that face the fluorescent lamp 20, an outer peripheral surface 38 that is a vertical surface in the attached state, and an upper surface portion 39 that is a horizontal surface in the attached state.
[0039]
The first reflecting portion 36 is inclined at a predetermined first angle θ <b> 1 with respect to the radial direction of the annular reflecting member 30, and is locked to the upper semicircular surface 25 of the fluorescent lamp 20. The second reflecting portion 37 is continuous with the first reflecting portion 36, is inclined at a second angle θ2 larger than a predetermined angle with respect to the radial direction of the ring-shaped reflecting member 30, and is a semicircle on the upper side of the fluorescent lamp 20 It faces the circumferential surface 25 with a gap.
[0040]
FIG. 9 is a front view showing a state in which the reflecting member 30 is developed. A one-dot chain line shown in FIG. 9 is a bending line of the reflecting member 30. The reflecting member 30a in the expanded state is formed through a plurality of bending steps. In the unfolded reflecting member 30a, the surfaces to be the first reflecting portion 36 and the second reflecting portion 37 are mirror-finished with one or more thin films.
[0041]
In the expanded reflecting member 30a, the plates corresponding to the adjacent outer peripheral surfaces 38 are connected to each other. On the other hand, a substantially V-shaped cut portion 36a is inserted between the plates corresponding to the adjacent first reflective portions 36, and a linear cut portion 37a is provided between the plates corresponding to the adjacent second reflective portions 37. It is put. Further, a linear cut portion 39 a is provided between the plates corresponding to the adjacent upper surface portions 39. Further, an extended portion 38a is formed on the outer peripheral surface 38 located at one end portion of the reflecting member 30a.
[0042]
In the thin plate bending step, by providing the substantially V-shaped cut portion 36a, the adjacent first reflecting portions 36 do not overlap each other without causing a surplus. On the other hand, by providing the linear cut portions 39a, the adjacent upper surface portions 39 are overlapped with each other. The folded portion 36b continuously formed at the end portion of the first reflecting portion 36 is overlapped with the end portion 39b of each upper surface portion 39, and the end portion 39b of each upper surface portion 39 is suppressed so as not to be lifted. In addition, the safety can be improved by covering the edges of the end portion of the first reflecting portion 36 and the end portion 39b of the upper surface portion 39 from the outside by the folded portion 36b.
[0043]
Next, the operation of the present embodiment will be described.
The reflecting member 30 is formed in a ring shape so as to follow the round fluorescent lamp 20. The reflecting member 30 entirely or partially covers the upper side of the semicircular surface 25 from the inner diameter side portion 22 to the outer diameter side portion 24 of the fluorescent lamp 20 from the outside. At this time, the reflecting member 30 is close to or in contact with the semicircular surface 25 of the fluorescent lamp 20.
[0044]
Light emitted upward or obliquely upward from the fluorescent lamp 20 is reflected downward by the reflecting member 30. As a result, light emitted above the fluorescent lamp 20 can be directed downward without escaping, and the illuminance of the fluorescent lamp 20 can be increased. Specifically, the light radiated above the fluorescent lamp 20 and the like enters the first reflecting portion 36 and the second reflecting portion 37 of the reflecting member 30 to be reflected downward.
[0045]
The reflecting member 30 is arranged along the round fluorescent lamp 20, and is supported by being locked on the upper side of the semicircular surface 25 of the fluorescent lamp 20. By directly locking the reflecting member 30 to the semicircular surface 25 of the fluorescent lamp 20, the attaching operation of the reflecting member 30 is facilitated, a special support member is not required, and the cost can be further reduced.
[0046]
The reflecting member 30 can be attached to the apparatus main body without removing the fluorescent lamp 20. That is, when the reflecting member 30 in the first state having a diameter larger than the outer diameter of the fluorescent lamp 20 is passed through the outer side of the fluorescent lamp 20 so as to be externally fitted to the fluorescent lamp 20, the fluorescent member 20 moves upward. .
[0047]
Next, the diameter of the reflecting member 30 in the first state is reduced to the second state. Thereby, the upper side of the semicircular circumferential surface 25 of the reflecting member 30 can be entirely or partially covered with the reflecting member 30 from the outside. When the reflecting member 30 is in the second state, the reflecting member 30 can be locked to the upper side of the semicircular surface 25 of the fluorescent lamp 20, and a special mounting member for the reflecting member 30 is not necessary.
[0048]
As described above, the diameter of the reflecting member 30 can be reduced. Specifically, the reflecting member 30 is formed in a substantially C shape having an opening 22 in a part of the ring shape of the reflecting member 30. Then, by closing the opening 22, the diameter of the reflecting member 30 can be reduced from the first state to the second state.
[0049]
Further, the reflecting member 30 has a restoring force for restoring from the first state to the second state. The reflecting member 30 is deformed from the second state to the first state against the restoring force, and after the reflecting member 30 passes the outside of the fluorescent lamp 20 and moves above the fluorescent lamp 20, the reflecting member 30 is If the restoring force is used to restore the second state, the reflecting member 30 is engaged with the semicircular surface 25 on the upper side of the fluorescent lamp 20, so that the attaching operation of the reflecting member 30 becomes extremely easy. . In the first state, the extended portion 38a of the outer peripheral surface 38 on one end side of the reflecting member 30 and the outer peripheral surface 38 on the other end side are shifted from each other, while in the second state, both overlap each other.
[0050]
Furthermore, the reflecting member 30 is formed in a polygonal shape. In the present embodiment, the reflecting member 30 is formed in a dodecagon shape. The number of polygonal shapes of the reflecting member 30 can be increased in order of multiples of 6, such as 6, 12, 18, 24... The result is that the illuminance of the lamp 20 cannot be sufficiently increased. On the other hand, if the number of polygonal shapes of the reflecting member 30 is less than 6, when the reflecting member 30 is attached to the fluorescent lamp 20, it interferes with the support members 13 and 14 and attachment workability is not good.
[0051]
That is, by making the reflecting member 30 into a dodecagonal shape, the corners 24 of the reflecting member 30 can be arranged so as to correspond to the support members 13 and 14 of the lighting device. Accordingly, the support members 13 and 14 of the lighting device pass through the gap formed between the fluorescent lamp 20 and the corner portion 24 of the reflection member 30, and the reflection member is removed without removing the support members 13 and 14. 30 can be attached and attachment workability becomes easy.
[0052]
The reflection member 30 has an annular shape (in the embodiment, a dodecagonal shape) when viewed in a plan view. However, when the reflection member 30 is broken in the radial direction of the annular reflection member 30, the four reflection surfaces 36 to 39 have four surfaces. A closed space is formed. Thus, by making the reflecting member 30 into a closed cross-sectional shape, the strength of the reflecting member 30 can be increased, and the weight can be reduced without increasing the weight.
[0053]
The first reflecting portion 36 of the reflecting member 30 is locked on the upper side of the semicircular surface 25 of the fluorescent lamp 20 and is inclined at the first angle θ1 with respect to the radial direction of the reflecting member 30. The light mainly emitted upward from the light is reflected substantially downward. Further, the second reflecting portion 37 of the reflecting member 30 faces the upper semicircular surface 25 with a gap, and is inclined at the second angle θ2 with respect to the radial direction of the reflecting member 30, and the fluorescent lamp 20 The light radiated obliquely upward from is reflected substantially downward.
[0054]
In the above embodiment, the fluorescent lamp is locked to the semicircular surface 25 on the upper side from the first state larger than the outer diameter of the fluorescent lamp 20 so that the fluorescent lamp 20 can be externally fitted to the 40 W fluorescent lamp 20 from below. Although what was comprised so that diameter reduction was possible to the 2nd state smaller than the outer diameter of 20 was shown, it is not restricted to this. That is, a fourth diameter larger than the inner diameter of the fluorescent lamp 20 to be engaged with the upper semicircular surface 25 from a third state smaller than the inner diameter of the fluorescent lamp 20 to be fitted into the 40 W fluorescent lamp 20 from below. You may be comprised so that diameter expansion is possible.
[0055]
In this case, for example, the reflection member 30 can be expanded in diameter from the third state to the fourth state by forming an overlapping portion where the members overlap each other in a part of the ring shape and reducing the overlapping allowance between the members. Configured as follows. The reflecting member 30 is configured to be deformable from the third state to the fourth state by its restoring force. As described above, when the reflecting member 30 is passed through the inner diameter side of the fluorescent lamp 20, the reflecting member 30 may be formed so as to avoid the connector 26 of the fluorescent lamp 20.
[0056]
Similarly, the reflecting member 30 may be provided along the 32 W fluorescent lamp 20. At this time, the reflection member 30 may be attached to the outside of the fluorescent lamp 20 so as to be fitted to the fluorescent lamp 20 or to the inside of the fluorescent lamp 20 so as to be fitted to the fluorescent lamp 20. Also good.
[0057]
The reflecting member 30 may have a restoring force that restores the first state or the third state. In this case, in order to pass the reflecting member 30 to the outer diameter side or inner diameter side of the fluorescent lamp 20, it is necessary to deform the reflecting member 30 to the second state or the fourth state against the restoring force.
[0058]
Also, when each fluorescent lamp 20 is supported by the support members 13 and 14 of the lighting device at a position that bisects the circumference of the round shape, the reflecting member 30 is formed in a hexagonal shape or a dodecagonal shape. Therefore, the corner portion 34 of the reflecting member 30 is arranged corresponding to the support members 13 and 14 of the lighting device, and the gap between the fluorescent lamp 20 and the corner portion 34 is set to the support member 13 and 14. 14 can pass, and the reflection member 30 can be attached without removing the fluorescent lamp 20 from the support members 13 and 14.
[0059]
Furthermore, although the thin plate which made the surface which should be used as the 1st reflective part 36 and the 2nd reflective part 37 the mirror surface was shown what formed the reflective member 30 by a plurality of bending processes, after injection molding the resin material, A thin film may be formed by vapor deposition on the surface to be the first reflecting portion 36 and the second reflecting portion 37.
[0060]
Furthermore, although the reflection member 30 is shown to be directly locked to the fluorescent lamp 20, it may be arranged close to the fluorescent lamp 20. In this case, the fluorescent lamp 20 is supported by the main body 11 and the shade 15 of the lighting device.
Furthermore, although the reflecting member 30 is passed from the lower side of the fluorescent lamp 20 to the upper side and then locked and attached to the upper semicircular surface 25 of the fluorescent lamp 20, for example, from the main body 11 of the lighting device. After removing the fluorescent lamp 20 and attaching the reflective member 30 to the upper semicircular surface 25 of the fluorescent lamp 20, the reflective member 30 may be attached to the main body 11 together with the fluorescent lamp 20.
[0061]
10 to 14 show an illumination device according to another embodiment of the present invention. 10 is a perspective view of a lamp and a reflecting member according to another embodiment of the present invention as viewed from the front, FIG. 11 is a perspective view of the reflecting member as viewed obliquely from above, and FIG. FIG. 13 is a sectional view taken along line XIII-XIII in FIG.
[0062]
As shown in FIGS. 10 to 13, the reflecting member 50 may be for increasing the illuminance of the lamp 40 having the substantially spherical bulb 41. That is, the reflecting member 50 is formed in an annular shape so as to follow the circumferential direction of the great circle 44 that partitions the substantially spherical bulb 41 into the upper hemisphere 42 and the lower hemisphere 43 in a state where the bulb 41 is used. The reflecting member 50 covers the spherical surface of the upper hemisphere 42 entirely or partially from the outside so as to reflect light emitted upward or obliquely upward from the lamp 40 downward.
[0063]
As shown in FIG. 13, the ring-shaped reflecting member 50 forms a closed space in which a cross section broken in the radial direction of the reflecting member 50 is closed from the outside, and the closed space is substantially symmetrical in the vertical direction. It is closed on five sides. The five surfaces are a pair of first reflecting portions 56 facing the fluorescent lamp 20, a pair of second reflecting portions 57, and an outer peripheral surface 58 that is a vertical surface in the attached state.
[0064]
FIG. 14 is a front view showing a state in which the reflecting member 50 is developed. A dashed line shown in FIG. 14 is a bending line of the reflecting member 50. The reflecting member 50a in the unfolded state is formed through a plurality of bending steps. In the unfolded reflecting member 50a, the surfaces to be the first reflecting portion 56 and the second reflecting portion 57 are mirror-finished with one or more thin films.
[0065]
In the expanded reflecting member 50a, the plates corresponding to the adjacent outer peripheral surfaces 58 are connected to each other. On the other hand, a substantially V-shaped cut portion 56 a is inserted between the plates corresponding to the adjacent first reflection portion 56 and second reflection portion 57. An extension 58a is formed on the outer peripheral surface 58 located at one end of the reflecting member 50a.
[0066]
A folded portion 56b continuously formed at one end of the pair of first reflecting portions 56 is overlapped with the other end of the pair of first reflecting portions 56, and the end of the other first reflecting portion 56 is overlapped. By suppressing each of them from floating, the quality of appearance can be improved, and safety can be improved by covering the edge of the end of the first reflecting portion 56 from the outside with the folded portion 56b.
[0067]
In order to attach the reflecting member 50 to the main body of the lighting device, first, the lamp 40 is removed from the main body of the lighting device, and the reflecting member 50 is passed from the connector side of the lamp 40 so that the reflecting member 50 is fitted to the lamp 40. After 50 is locked to the spherical surface of the upper hemisphere 42 of the lamp 40, the lamp 40 is attached to the main body of the lighting device. On the other hand, like the reflecting member 30 of the fluorescent lamp 20, the reflecting member 50 may move from the lower hemisphere 43 of the lamp 40 to the upper hemisphere 42 side through the outside of the lamp 40.
[0068]
【The invention's effect】
According to the lighting device according to the present invention, it is formed in a ring shape along the round of the fluorescent lamp, above the semicircular surface extending to a portion of the outer diameter side from the inner diameter side portion of the round of the fluorescent lamp Because it includes a reflective member that reflects light emitted upward or obliquely upward from the fluorescent lamp by covering and partially or partially covering the upper semicircular surface from the outside, Illumination can be increased and costs can be reduced simply by attaching a reflective member to an existing general lighting device.
[0069]
In addition, since the reflecting member is supported by being locked to the upper side of the semicircular surface of the fluorescent lamp, the attaching operation of the reflecting member is facilitated, and a special supporting member is not required, and the cost is further reduced. Can be reduced.
Furthermore, the support member of the lighting device can pass through the gap formed between the fluorescent lamp and the corner of the reflection member, and the reflection member can be attached without removing the support member, so that the installation work is easy. become.
[Brief description of the drawings]
FIG. 1 is a front view of a lighting device according to an embodiment of the present invention.
FIG. 2 is a bottom view of a fluorescent lamp and a reflecting member according to an embodiment of the present invention as viewed from below.
3 is a cross-sectional view taken along line III-III in FIG.
FIG. 4 is a perspective view of a reflecting member according to an embodiment of the present invention as viewed obliquely from below.
FIG. 5 is a partial perspective view of a reflecting member according to an embodiment of the present invention as viewed obliquely from above.
FIG. 6 is a plan view of a reflecting member according to an embodiment of the present invention.
FIG. 7 is a bottom view of a reflecting member according to an embodiment of the present invention.
FIG. 8 is a front view of a reflecting member according to an embodiment of the present invention.
FIG. 9 is a front view illustrating a developed state of the reflecting member according to the embodiment of the invention.
FIG. 10 is a front perspective view of a lamp and a reflecting member according to another embodiment of the present invention.
FIG. 11 is a perspective view of a reflecting member according to another embodiment of the present invention as viewed obliquely from above.
FIG. 12 is a perspective view of a reflecting member according to another embodiment of the present invention as viewed obliquely from below.
13 is a cross-sectional view taken along line XIII-XIII in FIG.
FIG. 14 is a front view showing a developed state of a reflecting member according to another embodiment of the present invention.
[Explanation of symbols]
θ1 ... first angle θ2 ... second angle 11 ... body 12 ... support ring 13 and 14 ... support member 15 ... shade 20 ... fluorescent lamp 22 ... inner diameter side portion 24 ... outer diameter side portion 25 ... semicircular surface 26 ... Connector 30 ... Reflecting member 30a ... Expanded reflecting member 32 ... Opening 34 ... Corner 36 ... First reflecting part 36a ... Notch part 36b ... Folded part 37 ... Second reflecting part 37a ... Notch part 38 ... Outer peripheral surface 38a ... extension 39 ... upper surface 39a ... notch 40 ... lamp 41 ... bulb 42 ... upper hemisphere 43 ... lower hemisphere 44 ... great circle 50 ... reflecting member 56 ... first reflecting portion 57 ... second reflecting portion 58 ... outer peripheral surface

Claims

A lighting device designed to increase the illuminance of a round fluorescent lamp,
It is formed in a ring shape so as to follow the round fluorescent lamp, and is engaged with the upper side of the semicircular surface from the inner diameter side portion to the outer diameter side portion of the round fluorescent lamp . A reflective member that reflects light emitted upward or obliquely upward from the fluorescent lamp by covering the semicircular surface entirely or partially from the outside ,
The fluorescent lamp is supported by a support member of the lighting device at a position that divides the circular circumference into two or three equal parts,
The reflecting member is formed in a hexagonal shape or a dodecagonal shape,
The corner | angular part of the said reflection member is distribute | arranged so as to correspond to the support member of the said illuminating device, The illuminating device characterized by the above-mentioned .